pkt_sched: sch_htb: Optimize WARN_ONs in htb_dequeue_tree() etc.
We can skip WARN_ON() in htb_dequeue_tree() because there should be
always a similar warning from htb_lookup_leaf() earlier.
The first WARN_ON() in in htb_lookup_leaf() is changed to BUG_ON()
because most likly this should end with oops anyway.
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index b820a0a..5070643 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -726,7 +726,7 @@
u32 *pid;
} stk[TC_HTB_MAXDEPTH], *sp = stk;
- WARN_ON(!tree->rb_node);
+ BUG_ON(!tree->rb_node);
sp->root = tree->rb_node;
sp->pptr = pptr;
sp->pid = pid;
@@ -746,9 +746,10 @@
*sp->pptr = (*sp->pptr)->rb_left;
if (sp > stk) {
sp--;
- WARN_ON(!*sp->pptr);
- if (!*sp->pptr)
+ if (!*sp->pptr) {
+ WARN_ON(1);
return NULL;
+ }
htb_next_rb_node(sp->pptr);
}
} else {
@@ -779,8 +780,7 @@
do {
next:
- WARN_ON(!cl);
- if (!cl)
+ if (unlikely(!cl))
return NULL;
/* class can be empty - it is unlikely but can be true if leaf